Add generic TreeView class

EstusShots.Gtk/Controls/BindableListView.cs

@@ -0,0 +1,135 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Gtk;
+
+namespace EstusShots.Gtk.Controls
+{
+    public class SelectionChangedEventArgs : EventArgs
+    {
+        public object Selection { get; }
+
+        public SelectionChangedEventArgs(object selection)
+        {
+            Selection = selection;
+        }
+    }
+    
+    public delegate void SelectionChangedEventHandler(object o, SelectionChangedEventArgs args);
+    
+    public class BindableListView<T>
+    {
+        public ListStore ListStore { get; internal set; }
+
+        public TreeView TreeView { get; }
+
+        public string KeyField { get; }
+
+        public IEnumerable<T> Items { get; set; }
+
+        public T SelectedItem { get; set; }
+        
+        public List<DataColumn> Columns { get; }
+
+        public event SelectionChangedEventHandler OnSelectionChanged;
+
+        /// <summary>
+        /// Initialize a new BindableListView with an existing TreeView Widget
+        /// </summary>
+        /// <param name="columns">The columns of the grid</param>
+        /// <param name="keyField">Unique key field in the item sources type</param>
+        /// <param name="treeView">An instance of an existing TreeView Widget</param>
+        public BindableListView(List<DataColumn> columns, string keyField, TreeView treeView = null)
+        {
+            TreeView = treeView ?? new TreeView();
+            Columns = columns;
+            KeyField = keyField;
+            InitTreeViewColumns();
+            InitListStore();
+            TreeView.Model = ListStore;
+            Items = new List<T>();
+            
+            TreeView.Selection.Changed += TreeView_SelectionChanged;
+        }
+
+        private void TreeView_SelectionChanged(object sender, EventArgs e)
+        {
+            if (!(sender is TreeSelection selection)) return;
+            selection.GetSelected(out var model, out var iter);
+            var key = model.GetValue(iter, 0);
+            var item  = Items.FirstOrDefault(x =>
+            {
+                var prop = x.GetType().GetProperty(KeyField);
+                var value = prop?.GetValue(x);
+                return value != null && value.Equals(key);
+            });
+            
+            if (item == null)
+            {
+                Console.WriteLine($"No item for key '{key}' found in data store");
+                return;
+            }
+
+            SelectedItem = item;
+            OnSelectionChanged?.Invoke(this, new SelectionChangedEventArgs(SelectedItem));
+        }
+
+        public void DataBind()
+        {
+            ListStore.Clear();
+            foreach (var item in Items)
+            {
+                var row = new List<object>();
+                foreach (var column in Columns)
+                {
+                    var prop = item.GetType().GetProperty(column.PropertyName);
+                    
+                    if (prop == null)
+                        throw new TypeLoadException(
+                            $"Property '{column.PropertyName}' does not exist on Type '{item.GetType()}'");
+                    
+                    row.Add(prop.GetValue(item));
+                }
+                
+                // The key value must be the first value in the row
+                var key = item.GetType().GetProperty(KeyField)?.GetValue(item);
+                row.Insert(0, key);
+                
+                try
+                {
+                    ListStore.AppendValues(row.ToArray());
+                }
+                catch (Exception e)
+                {
+                    Console.WriteLine(e);
+                }
+            }
+        }
+
+        private void InitTreeViewColumns()
+        {
+            foreach (var dataColumn in Columns)
+            {
+                // Offset by one, because the first column in the data store is fixed to the key value of the row
+                var index = Columns.IndexOf(dataColumn) + 1;
+                var column = new TreeViewColumn(
+                    dataColumn.Title,
+                    new CellRendererText(),
+                    "text", index);
+                TreeView.AppendColumn(column);
+            }
+        }
+
+        private void InitListStore()
+        {
+            var types = Columns
+                .Select(x => typeof(T).GetProperty(x.PropertyName)?.PropertyType);
+
+            // The first column in the data store is always the key field.
+            var columns = new List<Type> {typeof(T).GetProperty(KeyField)?.PropertyType};
+            columns.AddRange(types);
+            
+            ListStore = new ListStore(columns.ToArray());
+        }
+    }
+}

EstusShots.Gtk/Controls/DataColumn.cs

@@ -0,0 +1,16 @@
+namespace EstusShots.Gtk.Controls
+{
+    public class DataColumn
+    {
+        public string PropertyName { get; set; }
+        
+        public string Title { get; set; }
+
+        public DataColumn()  { }
+
+        public DataColumn(string propertyName)
+        {
+            PropertyName = propertyName;
+        }
+    }
+}

EstusShots.Gtk/DataStores/SeasonsDataStore.cs

@@ -1,55 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Globalization;
-using EstusShots.Shared.Models;
-using GLib;
-using Gtk;
-
-namespace EstusShots.Gtk.DataStores
-{
-    public class SeasonsDataStore
-    {
-        public ListStore ListStore { get; private set; }
-
-        public TreeView View { get; set; }
-
-        public List<Season> Data { get; set; }
-
-        public SeasonsDataStore(TreeView view)
-        {
-            ListStore = new ListStore(GType.Int, GType.String, GType.String);
-            Data = new List<Season>();
-            View = view;
-            var columns = BuildColumns();
-            columns.ForEach(column => View.AppendColumn(column));
-            View.Model = ListStore;
-        }
-        
-        public void DataBind()
-        {
-            ListStore.Clear();
-            foreach (var datum in Data)
-            {
-                var row = new object[] {datum.Number, datum.Game, datum.Start.ToString(CultureInfo.InvariantCulture)};
-                try
-                {
-                    ListStore.AppendValues(row);
-                }
-                catch (Exception e)
-                {
-                    Console.WriteLine(e);
-                }
-            }
-        }
-        private List<TreeViewColumn> BuildColumns()
-        {
-            var columns = new List<TreeViewColumn>
-            {
-                new TreeViewColumn("Number", new CellRendererText(), "text", 0),
-                new TreeViewColumn("Game", new CellRendererText(), "text", 1),
-                new TreeViewColumn("Start", new CellRendererText(), "text", 2)
-            };
-            return columns;
-        }
-    }
-}

EstusShots.Gtk/EstusShots.Gtk.csproj

@@ -21,4 +21,8 @@
       <ProjectReference Include="..\EstusShots.Shared\EstusShots.Shared.csproj" />
     </ItemGroup>
 
+    <ItemGroup>
+      <Folder Include="DataStores" />
+    </ItemGroup>
+
 </Project>

EstusShots.Gtk/MainWindow.cs

@@ -1,10 +1,11 @@
 using System;
-using System.Net;
+using System.Collections.Generic;
+using System.Linq;
 using System.Net.Http;
 using System.Text;
 using System.Text.Json;
 using EstusShots.Client;
-using EstusShots.Gtk.DataStores;
+using EstusShots.Gtk.Controls;
 using EstusShots.Shared.Models;
 using Gtk;
 using Application = Gtk.Application;
@@ -24,7 +25,7 @@ namespace EstusShots.Gtk
         [UI] private readonly Button _newSeasonButton = null;
         [UI] private readonly Label _infoLabel = null;
 
-        private SeasonsDataStore SeasonsView { get; set; }
+        private BindableListView<Season> SeasonsView { get; set; }
         
         public MainWindow() : this(new Builder("MainWindow.glade")) { }
 
@@ -37,17 +38,34 @@ namespace EstusShots.Gtk
             _loadButton.Clicked += LoadButtonClicked;
             _newSeasonButton.Clicked += NewSeasonButtonOnClicked;
 
-            SeasonsView = new SeasonsDataStore(_seasonsView);
+            var seasonsColumns = new List<DataColumn>
+            {
+                new DataColumn(nameof(Season.DisplayName)){Title = "Name"}
+            };
+            SeasonsView = new BindableListView<Season>(seasonsColumns, nameof(Season.SeasonId) ,_seasonsView);
+            SeasonsView.OnSelectionChanged += SeasonsViewOnOnSelectionChanged;
             
             Info("Application Started");
         }
 
+        private void SeasonsViewOnOnSelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            if (!(e.Selection is Season season)) return;
+            Info($"Season '{season.DisplayName}' selected");
+        }
+
         private void NewSeasonButtonOnClicked(object sender, EventArgs e)
         {
+            if (!SeasonsView.Items.Any())
+            {
+                Info("Cannot add Season (Not Loaded)");
+                return;
+            }
+            var nextNum = SeasonsView.Items.Max(x => x.Number) + 1 ;
             var season = new Season
             {
                 Game = "Test Game",
-                Number = 1,
+                Number = nextNum,
                 Start = DateTime.Now
             };           
             var content = new StringContent(JsonSerializer.Serialize(season), Encoding.UTF8, "application/json");
@@ -61,7 +79,8 @@ namespace EstusShots.Gtk
                     _infoLabel.Text = $"Error while creating Season: {response.ReasonPhrase}";
                     return;
                 }
-                
+
+                ReloadSeasons();
                 Info($"Created new Season");
             }
             catch (Exception ex)
@@ -70,23 +89,19 @@ namespace EstusShots.Gtk
                 Console.WriteLine(ex.Message);
             }
         }
-
-        private void SeasonsViewOnShown(object sender, EventArgs e)
-        {
-            Info("Loading Data");
-            // var seasons = Client.GetSeasons().Result;
-            // SeasonsView.Data = seasons;
-            // SeasonsView.DataBind();
-            // Info("Data Loaded");
-        }
         
         private void LoadButtonClicked(object sender, EventArgs a)
         {
-            var seasons = Client.GetSeasons().Result;
+            ReloadSeasons();
-            SeasonsView.Data = seasons;
-            SeasonsView.DataBind();
             Info("List Refreshed");
         }
+
+        private void ReloadSeasons()
+        {
+            var seasons = Client.GetSeasons().Result;
+            SeasonsView.Items = seasons;
+            SeasonsView.DataBind();
+        }
         
         private void Window_DeleteEvent(object sender, DeleteEventArgs a)
         {

EstusShots.Gtk/MainWindow.glade

@@ -29,7 +29,6 @@
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
                 <property name="enable_grid_lines">horizontal</property>
-                <signal name="show" handler="SeasonsViewOnShown" swapped="no"/>
                 <child internal-child="selection">
                   <object class="GtkTreeSelection"/>
                 </child>